
/*css.html*/
p{
    color: blue;
    margin-left: 30px;
}

/*css选择器.html*/
h1{color: green;}
p {font-style: italic}
div>#iter{font-weight: bold}
span+h3 {
    background: burlywood;color: gray;
}

/*css+div.html*/
div.container{width:90%;height: 80%; background-color:gray}
div.leftframe{background-color: #00ff99;
    height:200px;width:20%;float:left}
div.rightframe{background-color: #88bb99;
    height:200px;width:50%;float:left;padding:50px;margin:10px}